HIIT was originally developed by track coaches to train runners, but it has crossed over to the fitness industry due to its fat-burning benefits confirmed many times over in scientific studies (see "HIIT Findings"). A lot of these studies found that subjects performing HIIT burned significantly more body fat—and in less time—than those who did steady-state cardio programs.
Surround yourself with encouraging people. Your social environment has a huge impact on your success, so make sure the people you talk to are encouraging you to stay fit. Ideally, you should have a few friends who are losing weight or have done so in the past. Note that friends who want to lose weight but have never done so may not be supportive- look for successful people who will bring you up with them.
The trick here is not only to avoid all obvious sources of carbohydrate (sweets, bread, spaghetti, rice, potatoes), but also to be careful with your protein intake. If you eat large amounts of meat, eggs and the like, the excess protein will be converted into glucose in your body. Large amounts of protein can also raise your insulin levels somewhat. This compromises optimal ketosis.
SOURCES: WebMD Feature: "With Fruits and Veggies, More Matters." 2005 U.S. Dietary Guidelines. Elizabeth Ward, MS, RD, author, The Pocket Idiot's Guide to the New Food Pyramids. Elaine Magee, MPH, RD,author, Comfort Food Makeovers. Brian Wansink, PhD, professor and director, Cornell Food and Brand Lab, Ithaca, N.Y.; author, Mindless Eating. Barbara Rolls, PhD, professor of nutritional sciences; and director, laboratory for the study of human ingestive behaviors, Penn State University; and author, The Volumetrics Eating Plan.
"Only doing abdominal-focused workouts, like crunches, won’t help you banish the bulge. Belly fat is simply where your body stores energy, so you need to take a whole-body approach to tackle it. HIIT training (high intensity interval training) is a great way to burn fat and get your heart rate up. Squats, burpees and treadmill sprints are all examples to try."